Definition of concave adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Sep 9, 2023 · Concave lenses focus light inside the curve of the lens, while convex lenses focus light using the outer curve. A lens that curves like a “C” (no flat side) is both concave or …

The meaning of CONCAVE is hollowed or rounded inward like the inside of a bowl. How to use concave in a sentence.

The concave, shiny building is built to maximize the use of sunlight, even on overcast days.

Concave definition: curved like a segment of the interior of a circle or hollow sphere; hollow and curved.. See examples of CONCAVE used in a sentence.

1. curved or hollowed inward like the inside of a circle or sphere. Compare convex (def. 1). 2. (of a polygon) having at least one interior angle greater than 180°. n. 3. a concave surface, part, …

A surface that is concave curves inwards in the middle. ...a concave stomach. ...the concave bottom of an empty hair spray container.

Nov 1, 2025 · concave (comparative more concave, superlative most concave) Curved like the inner surface of a sphere or bowl. (geometry, not comparable, of a polygon) Not convex; …

con•cave ( kon kāv′, kon′ kāv; kon′ kāv), adj., n., v., -caved, -cav•ing. hollow and curved. Cf. convex (def. 1). Mathematics [Geom.](of a polygon) having at least one interior angle greater …

Illustrated definition of Concave: Curved inwards. Example: A polygon (which has straight sides) is concave when there are dents or indentations...